The Contentious Relationship Between Pope Francis and Pope Benedict - Biography
History of the papacy - Wikipedia
The extraordinary year of three popes in 1978 - BBC News
Holy Smoke, Antipopes And More: A Guide To Popes And The Papacy | HistoryExtra
Two Popes, and One Big Furor After Benedict Weighs in on Priestly Celibacy - The New York Times
7 years after stepping down, Benedict fuels '2 popes' headache
Two Popes? You mean like the Two Headed Year of Mercy Logo? - The Bellarmine Forum
Francis turns 85, becomes one of history's oldest popes - Los Angeles Times
Queen Elizabeth II's Encounters With 5 Popes| National Catholic Register
The extraordinary skill shared by popes past and present
The Two Popes' True Story: Separating Fact and Fiction in the Netflix Movie
Up to and including Francis, how many popes have there been altogether? | globalquiz.org
Popes of the Catholic Church | USCCB
How many popes are there now?
Papal Primer: History's 10 Most Intriguing Popes | Live Science
Here's what's true and what's apocryphal in Netflix's new movie.
Benedict XVI | Biography, Resignation, Legacy, & Facts | Britannica
Every Pope ever: the full list | News | theguardian.com
Holy Smoke, Antipopes And More: A Guide To Popes And The Papacy | HistoryExtra
The Worst, Craziest Popes in History
Dueling Popes? Maybe. Dueling Views in a Divided Church? Definitely. - The New York Times
A look at popes and their encyclicals | Pew Research Center
Eight of the worst popes in church history | CNN
End of the world: Why Pope's 2020 resignation 'will fulfil 900-year-old doomsday prophecy' | Weird | News | Express.co.uk
